Apple has just kicked out the quick update to Airport Utility, which drives it to the version 5.5.3, Apple has released the Airport Utility 5.5.3 for both Windows and Mac OS X. The update to Airport Utility to fix the small bugs and causes the AirPort Express Base Station, Airport Extreme Base Station and Time Capsule application to crash during the setup.

This update contains bug fixes including the following:
Resolves an issue that caused the AirPort Utility to unexpectedly quit during setup

The Mac version requires OS X 10.5.7 or later, while the Windows version requires a minimum of Windows 7 SP1, Vista SP2, or XP SP3.